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An artist drew a picture of a giant wheel and the scale he used was 1 ..
An artist drew a picture of a giant wheel and the scale he used was 1 inch : 6 feet. If the diameter of the giant wheel measured 19 inches on his drawing board, then find the actual diameter of the giant wheel. => 114 feet or 115 feet or 113 feet or 116 feet..
Verification of Snell's Law
Place a rectangular glass slab on a white sheet of paper fixed on a drawing board..
Verification of the Laws of Reflection
Reflection of Light by a Plane Mirror Fix a sheet of white paper on a drawing board. Draw a line MM' on it and mark a point O at the center of the line and a normal ON on MM'. Draw IO, the incident ray in such a way that is less than 90 0 . Place a strip of plane mirror vertically with it..
Thrust and Pressure
perpendicular force applied on an object In the beginning of this chapter, we have defined the force as an external agent, which changes the direction of motion, speed or shape of the body. All along we were discussing only about the forces acting at a point on a body. Let us now consider the forces acting over an area. Suppose you have t..
Magnetic Field
image Magnetic field is a region near a magnetised body where magnetic forces can be detected. In a magnetic field, the magnetic dipole (Two equal and oppositely magnetised poles separated by a distance is referred to as magnetic dipole) experiences a turning force, which tends to align it parallel to t..
Verification of the Laws of Reflection
reflection of light by a plane mirror Fix a sheet of white paper on a drawing board. Draw a line MM' on it and mark a point O at the centre of the line and draw a normal ON on MM'. Draw IO, the incident ray in such a way that IOM is less than 90 o . Place a strip of plane mirror vertic..
Mapping of Magnetic Lines of Force
image A pictorial representation that gives the direction of the magnetic field at various points in a magnetic field is called a map of the magnetic field Let us now map the magnetic field by using a compass Fix a sheet of paper on a drawing board Place a bar magnet on the..
Verification of Snell's Law
snells law verification Place a rectangular glass slab on a white sheet of paper fixed on a drawing board. Trace the boundary ABCD of the glass slab. Remove the glass slab and draw a normal N 1 N 2 at O. Draw a straight line IO inclined at an angle say 30 o with the normal. ..
Refraction of Light through a Glass Slab
Let us now perform an experiment and find out how light gets refracted when it is incident on a rectangular glass slab. Place a rectangular glass slab on a white sheet of paper fixed on a drawing board. Trace the boundary ABCD of the glass slab. Remove the glass slab. D..
Laws of Refraction
  • image The incident ray, the refracted ray and the normal to the surface at the point of incidence all lie in one plane. For any two given pair of media, the ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant. The second law is called Snell's law after the..
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